Lets encrypt renewal problems

Hey folks, just wondering if anyone can help out point me in the right direction. I am getting emails to me about lets encrypt failing renewal but things seem okay with my certificate?

I am getting this error in my email like every night

Cannot validate the certificate authorization - #0 /usr/share/vitalpbx/www/modules/certificates/Types/LetsEncrypt.php(0): modules\certificates\Types\LetsEncrypt->_build()
#1 /usr/share/vitalpbx/scripts/lets_encrypt(0): modules\certificates\Types\LetsEncrypt->build()
#2 {main}

It tells me to check logging under/var/log/vitalpbx/. When I check there is nothing.

So just wondering if anyone had some advice what I could try.

Let’s Encrypt requires port 80 open for incoming requests, and additionally, requires multiple IPs whitelisted to be able to renew Let’s Encrypt certificates.

I have port 80 open and allowed to anywhere. This has only recently popped up and never had issues before.

Have you tried asking in the LE community forum? They’re pretty responsive over there.